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	Verbesserte VCSEL analoge optische Verbindung
	BUOLI CARLO; ESPOSITO CLAUDIO; MORA GIOVANNI
	2008-05-21
著作权人	SIEMENS S.P.A.
专利号	DE60320210D1
国家	德国
文献子类	授权发明
其他题名	Verbesserte VCSEL analoge optische Verbindung
英文摘要	An improved analog VCSEL optical link includes the following elements listed in their downstream order from the input to the output: an RF preamplifier (A1) for receiving a bandpass RF signal; a first impedance matching network (LASINT) to match the input impedance of a downstream VCSEL laser to the output impedance of the RF preamplifier (A1); the VCSEL laser coupled to one end of a multimode optical fibre of given length for transducing optically the electrical bandpass RF signal; a PIN diode coupled to the other end of the multimode optical fibre for transducing into electrical the optical signal coming from the fibre; a second impedance matching network (C2, L2) to match the output impedance of the PIN diode to the input impedance of a downstream low-noise transimpedance amplifier (T1) and minimise the noise figure of said transimpedance amplifier (T1) in the meanwhile; the transimpedance amplifier (T1) including a low-noise FET in common source configuration; an RF power amplifier (A2); an RF signal envelope detector generating a control signal for a variable phase shifter placed downstream the RF power amplifier (A2) to compensate for the AM/PM distortion introduced by both the optical fibre and the power amplifier itself; and, if necessary, a gain linearisation network of the RF power amplifier (A2) and/or the RF preamplifier (A1). The analog VCSEL optical link is suitable for the following uses: connecting indoor apparatuses with tower antennas either static, i.e. point-to-point radio relay, or directive arrays, i.e. point-to-multipoint systems; building-up a fibre infrastructure for connecting centralised base stations with respective pool of remote antennas serving as many cells of a cellular telephone system such as: PCS, GSM, UMTS, and similar; intra-building connections for distributing, CATV services (fig.4).
公开日期	2008-05-21
申请日期	2003-01-29
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/40056]
专题	半导体激光器专利数据库
作者单位	SIEMENS S.P.A.
推荐引用方式 GB/T 7714	BUOLI CARLO,ESPOSITO CLAUDIO,MORA GIOVANNI. Verbesserte VCSEL analoge optische Verbindung. DE60320210D1. 2008-05-21.

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